Gen. John Allen / Charles Dharapak, AP

by David Jackson, USA TODAY

by David Jackson, USA TODAY

White House spokesman Jay Carney said Wednesday that President Obama will proceed with Allen's nomination for NATO commander now that Allen has been cleared by an investigation into his e-mail exchanges with a Florida woman.

The Pentagon said this week that Allen's communications with the woman -- linked to the scandal that led to David Petraeus' resignation as CIA director -- did not amount to conduct unbecoming an officer.